Muscogee County I-185 begins just north of
Fort Benning in the southwestern part of
Columbus, which is
consolidated with
Muscogee County. It starts off as a northern extension of Lindsey Creek Parkway which enters Fort Benning immediately to the south of I-185's southern terminus. Almost immediately northeast of its southern terminus, it has an
interchange with
US Route 27 (US 27)/
US 280/
SR 1/
SR 520 (Victory Drive). The Interstate curves to the north-northwest. It passes Benning Hills Park and the Calhoun Tract before curving to the north-northeast. It crosses over Cusseta Road and some
railroad tracks of
Georgia Southwestern Railroad. It curves to the north-northwest and has an interchange with St. Marys Road. It curves to a due north direction and has an interchange with Buena Vista Road. The highway curves to the northwest and crosses over
Bull Creek. It then has an interchange with
SR 22 Spur (Macon Road). Here, it passes the Cross Country Plaza shopping center. I-185 crosses over
Lindsey Creek and then begins to parallel the creek. Upon crossing over College Drive, Lindsey Creek veers away from the Interstate. The highway then travels between
Hardaway High School and
Columbus State University. After crossing over the
Fall Line Trace, it has an interchange with
US 27 Alternate (US 27 Alt)/
SR 85 (Manchester Expressway). It then has an interchange with the Airport Thruway, which leads to
Columbus Airport. After the highway begins to curve to the north, it travels under a bridge that carries US 27/SR 1. It crosses over some railroad tracks of
Norfolk Southern Railway. Almost immediately is a
cloverleaf interchange with
collector/distributor roads with
US 80/
SR 22/
SR 540 (J.R. Allen Parkway), a limited-access
bypass of Columbus to its north. Within this interchange, it crosses over Roaring Branch. It curves to the north and has an interchange with Williams Road. The interchange with Williams Road is the southern limit of the I-185 Scenic Byway. I-185 retains this scenic designation thru to its northern terminus and is reduced to two lanes in each direction for the remainder of its course as well. Continuing on, I-185 curves to the north-northeast and has an interchange with Smith Road. Within this interchange, it crosses over
Heiferhorn Creek. At the northern end of this interchange, the highway leaves the
city limits of Columbus and enters
Harris County.
Harris County I-185 curves to the northwest and crosses over
Standing Boy Creek. It curves to the north-northwest and has an interchange with
SR 315. It crosses over
Mulberry Creek and curves to the northwest. It winds its way to the north-northeast, traveling parallel to
SR 219. It crosses over
Little Creek just to the west of
Peterson Lake and just south of an interchange with
SR 116. The highway winds its way to the north and crosses over
Mountain Oak Creek. At an interchange with Hopewell Church Road, SR 219 turns away from the Interstate. I-185 curves to the northeast and crosses over
House Creek Tributary. It then has an interchange with
SR 18. After it crosses over
Ingram Creek, the highway parallels the creek briefly and then enters
Troup County.
Troup County I-185 curves to the north-northeast and crosses over Turkey Creek. It then crosses over
Polecat Creek before curving to the north-northwest. It then crosses over
Flat Shoals Creek. It curves to the north-northeast and has another interchange with US 27/SR 1 (Martha Berry Highway). The highway then crosses over
Mud Creek. It curves to the north-northwest and crosses over
Panther Creek. After curving back to the north-northeast, it has an interchange with Big Springs Road. It curves back to the north-northwest and crosses over some railroad tracks of
CSX Transportation on the southeastern edge of
LaGrange. The highway begins to skirt along the eastern edge of the city. It crosses over
Long Cane Creek and then curves to the north-northeast again. It leaves the city limits of LaGrange and travels under a bridge that carries
SR 109. It then meets its northern terminus, an interchange with
I-85.
National Highway System The entire length of I-185 is part of the
National Highway System, a system of routes determined to be the most important for the nation's economy, mobility, and defense. ==History==